If it's anything like FFXI, the codes are going to be region locked still.
You can get around this by ordering digital copies of stuff; thankfully it's much easier now than it was like 10 years ago^^.
If you're wanting to order physical copies of stuff, if you can't get it shipped to you from an EU site, might be worth seeing if there's a family member or someone trusted who can act as a middle-man and then mail it to you?